7,189 Internal Medicine providers practice in Illinois, including 1,260 (18%) offering telehealth. The largest concentration is in Chicago. Profiles include federal Open Payments records of money received from drug and device companies in 2025. Listings are drawn from federal public records and are not endorsements.
Choose a city to see providers there.
| Internal Medicine in Chicago | 2,841 providers |
| Internal Medicine in Maywood | 252 providers |
| Internal Medicine in Springfield | 196 providers |
| Internal Medicine in Evanston | 180 providers |
| Internal Medicine in Peoria | 171 providers |
| Internal Medicine in Oak Lawn | 169 providers |
| Internal Medicine in Park Ridge | 160 providers |
| Internal Medicine in Urbana | 142 providers |
| Internal Medicine in Rockford | 81 providers |
| Internal Medicine in Naperville | 73 providers |
| Internal Medicine in Mchenry | 72 providers |
| Internal Medicine in Berwyn | 68 providers |
| Internal Medicine in Skokie | 64 providers |
| Internal Medicine in Elgin | 61 providers |
| Internal Medicine in Oak Park | 59 providers |
| Internal Medicine in Glenview | 58 providers |
| Internal Medicine in Arlington Heights | 53 providers |
| Internal Medicine in Elmhurst | 48 providers |
| Internal Medicine in Decatur | 44 providers |
| Internal Medicine in Aurora | 44 providers |
| Internal Medicine in Long Grove | 42 providers |
| Internal Medicine in North Chicago | 41 providers |
| Internal Medicine in Joliet | 40 providers |
| Internal Medicine in Lombard | 38 providers |
From CMS Medicare enrollment records covering 3,097 of the 7,189 providers listed here (43%). Providers who do not bill Medicare are not included in these figures.
| Group (as registered with Medicare) | Internal Medicine Doctors | All clinicians in group | Main city |
| Advocate Health and Hospitals Corp.oration | 295 | 3,081 | Buffalo Grove |
| Northwestern Medical Faculty Foundation | 225 | 4,386 | Chicago |
| Endeavor Health Medical Group | 191 | 3,330 | Evanston |
| Osf Multi-Specialty Group | 133 | 2,123 | Peoria |
| Dupage Medical Group LTD | 130 | 1,326 | Joliet |
| Hospital | City | Ownership | CMS star rating | Internal Medicine Doctors affiliated |
| Northwestern Medicine Central Dupage Hospital | Winfield | Nonprofit | 5 of 5 | 463 |
| Northshore University Healthsystem - Evanston Hospital | Evanston | Nonprofit | 5 of 5 | 344 |
| Northwestern Memorial Hospital | Chicago | Nonprofit | 5 of 5 | 308 |
| Northwestern Lake Forest Hospital | Lake Forest | Nonprofit | 5 of 5 | 256 |
| Northwest Community Hospital 1 | Arlington Heights | Nonprofit | 4 of 5 | 218 |
Sources: CMS Doctors and Clinicians (August 2026) and Facility Affiliation files (August 2026); hospital ownership type and overall star rating from CMS Hospital General Information (July 2026). A clinician in several groups is counted once, in the largest group they bill through. Ownership type is what the hospital reports to CMS; it does not show private equity or other investor ownership. How we build this directory.
Listed by city, largest first. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.
Patients often search by condition rather than specialty. These are conditions typically managed by Internal Medicine providers. Individual practices vary, so confirm with the provider before booking.
There are 7,189 Internal Medicine providers with active NPI records practicing in Illinois, according to federal NPPES data refreshed monthly.
Yes. 1,260 of the 7,189 Internal Medicine providers in Illinois (about 18%) report offering telehealth services in CMS data.
Chicago (2,841), Maywood (252), Springfield (196) have the highest concentration of Internal Medicine providers in Illinois.
2,137 of 7,189 Internal Medicine providers in Illinois (30%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.
Internal Medicine providers commonly treat high blood pressure, type 2 diabetes, high cholesterol, preventive care, chronic disease management and related conditions. Individual practices vary, so confirm with the provider before booking.
Provider counts and profiles come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.
Among 3,097 Internal Medicine Doctors in Illinois enrolled in Medicare, 22% bill through a solo or small practice with fewer than 10 clinicians, 10% through a mid-size group of 10 to 99, and 68% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
According to CMS facility affiliation records, the Illinois hospitals where the most Internal Medicine Doctors hold privileges are Northwestern Medicine Central Dupage Hospital in Winfield; Northshore University Healthsystem - Evanston Hospital in Evanston; Northwestern Memorial Hospital in Chicago.
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